· To stretch your trapezius muscles, try a few simple exercises to stretch the muscles, increase circulation and blood flow, and relieve tension. You can sit or stand up with your back and head straight and gently turn your head all the way to the right so it’s parallel with your shoulder. · Targeted stretches and strengthening exercises for trapezius pain can improve flexibility and reduce tension (see videos below). Hinge Health offers virtual physical therapy and more to help manage upper body and trapezius pain. Learn more. · Luckily, there’s a lot you can do to stretch tight trapezius muscles. From simple stretches and yoga poses, to modifications you can make to your posture throughout the day, here’s everything you need to know about your trapezius muscles and how to keep them nice and loose. 7 of the best trapeziusstretches to help improve posture, neck, shoulder and upper back movements and reduce pain and stiffness in the neck, shoulders and back Stretching is a simple way to relax the trapezius muscle. Gentle neck side stretches, shoulder shrugs, and cross-body shoulder stretches increase blood flow and lengthen tight muscle fibers. · Here’re the 7 best stretches to loosen your tight trapezius. 1. Seated Neck Release. The seated neck release or ear-to-shoulder stretch targets the upper trapezius muscles and helps relieve tension in your upper traps and neck, and may also improve the range of motion of your neck. How to do it: